I’m using a light box (10,000 lux) for 30 minutes at 7:30 each morning for depression and to help me get up at a...

A reader asks:  I'm using a light box (10,000 lux) for 30 minutes at 7:30 each morning for depression and to...

How do the lights work?

A reader asks: How do the lights work?Answer: Scientists are still investigating the precise mechanism that makes light therapy effective. Thus far,...

I started using a 10,000 lux light box last fall with dramatically positive results. …

A reader asks:  I started using a 10,000 lux light box last fall with dramatically positive results. Because I felt better...

I am confused. A recent q&a item said that color temperature and spectral output matter. I understood your previous answers to suggest they did...

A reader asks: I am confused. A recent Ask the Experts answer said that color temperature and spectral output matter. I...

In the question on “the mechanism of action of the agitation side effect,” one of your suggestions was to try light later in the...

A reader asks:  In the question on "the mechanism of action of the agitation side effect," one of your suggestions was...

If I buy a small light box with less lux output, is it simple math to adjust my sessions — for example, half the...

A reader asks:  If I buy a small light box with less lux output, is it simple math to adjust my...

 My daughter has been diagnosed with SAD and has purchased a light box which is helping her with waking and sleeping. She is 22...

A reader asks:  My daughter has been diagnosed with SAD and has purchased a light box which is helping her with...

 I have recently been diagnosed with SAD and am about to purchase a light box. Both Medicaid and Medicare have refused to contribute toward...

A reader asks:  I have recently been diagnosed with SAD and am about to purchase a light box. Both Medicaid and...

My husband has been diagnosed with SAD. His doctor told us it is okay to purchase a light box for therapy. He has some...

A reader asks:  My husband has been diagnosed with SAD. His doctor told us it is okay to purchase a light...

 I’ve noticed that light therapy boxes (LTB’s) have uses for SAD, but I have heard that they can be effective with insomnia.

A reader asks:  I've noticed that light therapy boxes (LTB's) have uses for SAD, but I have heard that they can...

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